| UNION DRAGON TRADING LIMITED | Private company limited by shares | Dissolved |
| UNIVERSE QUAKEPROOF ENGINEERING SYSTEM DEV. LIMITED | Private company limited by shares | Dissolved |
| UNION LINKAGE LIMITED | Private company limited by shares | Live |
| TALENT UNION INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION VANTAGE INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| UNION GENESIS LIMITED | Private company limited by shares | Dissolved |
| CROWN UNION ENTERPRISES LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL SKY LIMITED | Private company limited by shares | Live |
| UNIVERSAL HERITAGE GROUP, LIMITED | Private company limited by shares | Dissolved |
| UNITED HERITAGE GROUP, LIMITED | Private company limited by shares | Dissolved |
| EXCELLENCE UNION GARMENT COMPANY LIMITED | Private company limited by shares | Live |
| FRIENDS OF SHANTOU UNIVERSITY LIMITED | Company limited by guarantee | Live |
| UNION WISE LIMITED | Private company limited by shares | Dissolved |
| ST UNITED STUDIO LIMITED | Private company limited by shares | Live |
| UNION POWER LIMITED | Private company limited by shares | Live |
| NEW UNION INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Live |
| NEW UNION CHINA COMPANY LIMITED | Private company limited by shares | Dissolved |
| STAR UNITED LIMITED | Private company limited by shares | Dissolved |
| UNITED SKY LIMITED | Private company limited by shares | Live |
| ICE UNIVERSAL LIMITED | Private company limited by shares | Live |
| SILVERING UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION ELITE INTERNATIONAL ENTERPRISES LIMITED | Private company limited by shares | Live |
| UNION (INTERNATIONAL) ENGINEERING TECHNOLOGIES LIMITED | Private company limited by shares | Live |
| TIN MEN UNITED COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNISMART HONG KONG LIMITED | Private company limited by shares | Dissolved |
| UNIWAY INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG SINO-KOREA UNION DIGITAL LIMITED | Private company limited by shares | Dissolved |
| UNION PROPERTY INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION WINNER LIMITED | Private company limited by shares | Live |
| SUPER UNION GROUP COMPANY LIMITED | Private company limited by shares | Live |
| UNION PARK DEVELOPMENT LIMITED | Private company limited by shares | Live |
| UNITED ZONE LIMITED | Private company limited by shares | Dissolved |
| UNIQUE TOP INVESTMENT LIMITED | Private company limited by shares | Live |
| OLIVET UNIVERSITY LIMITED | Company limited by guarantee | Live |
| USA GM.VW UNION PETROLEUM CO., LIMITED | Private company limited by shares | Dissolved |
| UNION CREDIT ADVISORY LIMITED | Private company limited by shares | Dissolved |
| UNION CREATION CHEMICAL LIMITED | Private company limited by shares | Dissolved |
| Unispo Limited | Private company limited by shares | Live |
| FORTUNATE UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MARITIME BUREAU COMPANY LIMITED | Private company limited by shares | Live |
| HONG KONG UNION APPLE CLOTHING LIMITED | Private company limited by shares | Dissolved |
| UNITED GROUP STOCKS COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION LOGISTICS (CHINA) LIMITED | Private company limited by shares | Live Commenced dormancy on 04-May-2011 |
| SUN UNITED LIMITED | Private company limited by shares | Live |
| UNIVERSE SCIENCE & TECHNOLOGY INDUSTRIAL DEV. LIMITED | Private company limited by shares | Dissolved |
| UNION LINK TECHNOLOGY DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| UNIPROGRESS INVESTMENT LIMITED | Private company limited by shares | Live |
| UNIVERSAL BUSINESS CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| TRADE UNION LIMITED | Private company limited by shares | Live |
| CHINA INTERNATIONAL ZHOU YI RESEARCH UNITED ASSOCIATION LIMITED | Private company limited by shares | Dissolved |
| KAF UNITED COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNI-WELL INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| GREAT UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| SHINNING UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION CENTRAL LIMITED | Private company limited by shares | Dissolved |
| OCEAN UNION SHIPPING CO., LIMITED | Private company limited by shares | Live |
| WISE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| WIDE UNION INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |
| SEA UNION INDUSTRIAL LIMITED | Private company limited by shares | Dissolved |
| AKP UNITED CHINA CHANNEL CO. LIMITED | Private company limited by shares | Live |
| SHEEN UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| UNITED SMART TECHNOLOGY LIMITED | Private company limited by shares | Dissolved |
| UNI-DESIGN HONG KONG LIMITED | Private company limited by shares | Live |
| STATUE OF WORLD PEACE ROSELLINI UNION LIMITED | Private company limited by shares | Dissolved |
| SUCCESS UNION INTERNATIONAL LIMITED | Private company limited by shares | Live |
| WORLD UNION INTERNATIONAL INDUSTRIES LIMITED | Private company limited by shares | Dissolved |
| ASIA UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL (ASIA) LIMITED | Private company limited by shares | Live |
| JOY UNION INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| UNION STAR ENTERPRISE LIMITED | Private company limited by shares | Dissolved |
| S.T.C. UNIVERSAL HOLDING LIMITED | Private company limited by shares | Dissolved |
| UNION ARTS ENGINEERING LIMITED | Private company limited by shares | Live |
| UNIVERSAL GAIN INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNION MASTER DEVELOPMENT LIMITED | Private company limited by shares | Dissolved |
| Union Well Holdings Limited | Private company limited by shares | Live |
| UNI-SOURCE LIMITED | Private company limited by shares | Live |
| UNION VICTORY INTERNATIONAL (H.K.) LIMITED | Private company limited by shares | Dissolved |
| ORIENTAL UNION CONSTRUCTION ENGINEERING LIMITED | Private company limited by shares | Live |
| UNIREGENT CHINA LIMITED | Private company limited by shares | Live |
| UNISON SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNIPLEX LIMITED | Private company limited by shares | Live |
| BALDWIN UNION TECHNOLOGY LIMITED | Private company limited by shares | Live |
| GLOBAL TOURISM UNION LIMITED | Private company limited by shares | Dissolved |
| MILLENNIUM UNIVERSAL LIMITED | Private company limited by shares | Dissolved |
| UNION RESOURCES (ASIA) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL CARNIVAL INVESTMENT LIMITED | Private company limited by shares | Dissolved |
| SINO UNION INSURANCE SERVICES LIMITED | Private company limited by shares | Dissolved |
| UNISON INTERNATIONAL INVESTMENT LIMITED | Private company limited by shares | Live |
| UNION LIHUA (HONG KONG) PHARMACETICAL LIMITED | Private company limited by shares | Dissolved |
| UNI-SINO INVESTMENTS LIMITED | Private company limited by shares | Dissolved |
| UNIQUE TOP (CHINA) LIMITED | Private company limited by shares | Live |
| GOLD UNION (CHINA) LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL MANAGEMENT CONSULTANCY LIMITED | Private company limited by shares | Dissolved |
| UNION FORTUNE LIMITED | Private company limited by shares | Dissolved |
| PEKING UNIVERSITY SHUE YAN COLLEGE ALUMNI ASSOCIATION LIMITED | Company limited by guarantee | Live |
| UNION FASHION CO., LIMITED | Private company limited by shares | Live |
| UNION STEEL INTERNATIONAL LIMITED | Private company limited by shares | Live |
| EAGLE UNION TRANSPORTATION CO., LIMITED | Private company limited by shares | Dissolved |
| W.T.G UNION (H.K.) COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNITOM (H.K.) INTERNATIONAL LIMITED | Private company limited by shares | Dissolved |